a90799d5fb
Reason for revert: Increase in encode time larger than expected. Original issue's description: > Turn off error resilience for VP9 if no spatial or temporal layers are configured and NACK is enabled. > > Error resilience is currently always enabled for VP9 which reduces quality. > > BUG=webrtc:6783 > > Committed: https://crrev.com/4eb03c76fa2320534d669fda2aabf800e7a6f579 > Cr-Commit-Position: refs/heads/master@{#15390} TBR=stefan@webrtc.org,marpan@webrtc.org,mflodman@webrtc.org,marpan@google.com # Not skipping CQ checks because original CL landed more than 1 days ago. BUG=webrtc:6783 Review-Url: https://codereview.webrtc.org/2554403006 Cr-Commit-Position: refs/heads/master@{#15501}